Composody vs Solderbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Composody
Read full descriptionHide full description
Create randomly generated melodies using the selectors to decide which scale and patterns to use.
Solderbox
This app is a compact, semi-modular synthesizer designed for generative music creation. It offers a comprehensive set of modular functions, aiming for analog-like sound and behavior with unique digital effects and an 'Instability Engine' for organic fluctuations.
- Generative synthesis tools
- Analog-like sound emulation
- Instability Engine for organic fluctuations
- Audio Unit (AUv3) compatibility
- Built-in Pulsequencer melody generator
- Multiple filter modes
- Stackable patch cables
Read full descriptionHide full description
Solderbox is a compact semimodular synthesizer, made in collaboration with Jakob Haq. It is heavily based on Jakob's own modular rack design (which features a lot of modules made by hand). The app is designed to offer a set of modular functions that is both comprehensive and eclectic, including several tools for generative synthesis, random signals and the surgical mangling of audio waves and modulation signals. A lot of effort went into making everything sound and behave as analog as digitally possible (with the exception of the unashamedly digital Entropy lo-fi effect processor). Additionally, the built-in Instability Engine injects the subtle fluctuations simulating the effects of crosstalk, leaky signals and expired electrical components. This is a living instrument with a soul of its own. - Full Audio Unit compatibility (AUv3 instrument, audio effect) - Universal design (iPhone, iPad, MacOS AUv3) - Built-in Pulsequencer (LFO-based generative melody generator with custom scales) - 4 mode Low-pass filter (6, 12, 18, 24 dB) - 3 voice polyphony - Drone mode - Stackable patch cables - DIY Lo-Fi digital delay circuit emulation - All synth settings exposed a AU Parameters (for automation and MIDI learning in your host of choice) Find the user manual on ruismaker.com
Screenshots
Verdict
The clearest difference is price: Composody at Free against Solderbox's $12.99. Composody also leads on update cadence (weekly vs every 6 weeks). Solderbox's advantage is chart position (#195 vs unranked) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Composody is free to download; Solderbox costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Composody ships an update weekly, Solderbox every 6 weeks. The most recent releases landed on September 12, 2026 and September 23, 2026 respectively.
| Parameter | Composody | Solderbox |
|---|---|---|
| Price | Free — better | $12.99 |
| Rating | — | 5.0 (27 ratings) — better |
| Positive reviews | — | 90.0% of reviews |
| Number of ratings | — | 27 — better |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #195 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.1 | 13 — better |
| Further details — not scored | ||
| Size | 5 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Thunderbolt Fox LLC | Bram Bos |
In-app purchases
Composody
No in-app purchases
Solderbox
No in-app purchases









